ML112070779

Enclosure 3: Presentation Slides/Handouts

ML112070779
Person / Time
Site:	Summer, 07201038
Issue date:	07/26/2011
From:	South Carolina Electric & Gas Co
To:	Office of Nuclear Material Safety and Safeguards
Allen W NMSS/SFST 492-3148
Shared Package
ML112070733	List: ML112070748 ML112070779
References
TAC L24544
Download: ML112070779 (23)

Text

VC Summer Station Used Fuel Storage Project Overview July 20, 2011

Agenda

• Team introductions

• Background

• Project responsibilities

• Loading plan

• Chosen storage g technologygy

• ISFSI site selection and layout

• Major tasks

• Hazard analysis

• Fuel Handling Building crane upgrade

• Key implementation milestones

Team Introductions

• Wayne Stuart - Design Engineering Manager

• Roy Russell - Project Engineer

• Bruce Thompson - Licensing Manager

• Beth Quattlebaum - Licensing Engineer

• Joe Andrescavage - Project Coordinator

• Mike Sitsch - Project Manager Holtec:

• Rob Tindal - Project Manager

• Tammy Morin - Licensing Manager

Background

• VC Summer plant site is located in Jenkinsville SC and is part of NRC Region II. Current site is a single unit Westinghouse 3 loop PWR.

• VC Summer will lose full core offload capability in 2017 without used fuel storage availability

• 2766 ffuell assemblies bli willill b be useddb by th the end d off plant life in 2042

- Requires 75 MPCs (includes emptying fuel pool at the end of plant life)

• Assumes 37 fuel assembly MPC capacity

- VC Summer will utilize a General License for used fuel storage in accordance with 10 CFR 72

Project Responsibilities

• VC Summer - Team Lead. Provide oversight and overall management of the project

• Shaw Group - Architect Engineer. Perform project management, design and implementation

• Holtec International - Provide storage technology, license and hardware. Pool to pad loading services.

• PaR Nuclear (Westinghouse subsidiary) - Design, test and install single failure proof cask handling equipment (NUREG 0554)

Loading Plan

- Minimum of 4 MPCs (Multi Purpose Canisters) would have to be loaded every other cycle to maintain full core reserve

• Typical loading campaign will likely consist of 8 MPCs to optimize mobilization and demobilization costs

- First campaign will load 4 MPCs to accommodate learning curve

>> Scheduled to start January 2015

- Anticipate loading 1 MPC and transferring it to the ISFSI per week

Chosen Technology - HI-STORM FW System

• After a comprehensive, multi-discipline evaluation of commercial and technical attributes Holtec was the chosen supplier

- Canister capacity is 37 PWR fuel assemblies - HI-STORM FW (Flood and Wind) which was licensed on June 13, 2011

- Canister is licensed for storage and will be licensed for transportation

- Highest heat load capacity (47 kW)

- Suitable for high burnup fuels (68,200 MWd/MTU)

- Can discharge fuel cooled as little as 3 years

- No supplemental cooling required

- Up to 12 damaged fuel containers per canister

- Metamic-HT Basket provides structural and criticality function

HI-STORM FW SYSTEM HI-STAR 190 TRANSPORT CASK (OFFSITE TRANSPORT)

HI-TRAC VW TRANSFER CASK (ONSITE TRANSFER/TRANSPORT)

HI-STORM FW STORAGE CASK MPC-37 (INTERIM STORAGE)

MULTI-PURPOSE CANISTER (STORAGE/TRANSPORT/DISPOSAL) 8

Overpack (HI-STORM) Convection Flow 9

HI-STORM FW OVERPACK WITH MPC-37 INSERTED 10

Cask Transporter

• Loaded weight is 290 tons

• Can turn in its own length

• Rubber tires less harsh on haul path

ISFSI Site Selection

• Based on an extensive assessment of 4 potential sites presented in a detailed report

- ALARA/dose minimization

- Security

• Avoid separate PA (Protected Area)

• Major M j constructioni outsideid off PA PA. PA can then h b be expanded d d to encompass ISFSI and haul path.

- Short haul path

- Minimal hazards - haul path and ISFSI

- Minimal underground utilities

- Close proximity to cask fabrication pad

• Desirable to have this pad outside the Protected Area for easier access to overpack fabrication (assembly and concrete pours)

Proposed ISFSI Location (Artists Rendering)

Monticello Reservoir Haul Path North H2 Tanks Fuel Hdlg.

Bldg.

ld Reactor Bldg.

Fabrication Pad Sloped Berm ISFSI Pad

Proposed ISFSI (Artists Rendering - Looking Northwest)

Berm

Major Tasks

• Cask crane upgrade to single failure proof

• Underground relocations (storm drainage, etc.)

• Hydrogen tank relocation

• Construct haul path and ISFSI pad

• Protected Area expansion

Hazards Analysis

• Both the haul path and ISFSI were extensively evaluated to determine hazards for the movement and storage of used fuel casks

- Only substantial hazard identified so far are H2 tanks on the north side of the plant and will be relocated

Haul Path and H2 Tanks Fuel Handling Building Haul Road - Looking East

Geotechnical & Geophysical Studies

• The haul path and ISFSI have been extensively surveyed

• Lab analyses and preparation of the report documenting the results is being prepared

- Will be followed by foundation designs

Fuel Handling Building Crane Upgrade

• 125 ton bridge crane requires upgrade to Single Failure Proof for handling loaded used fuel casks

• Crane upgrades include:

- Single failure proof trolley

- All 3 hooks are radio controlled, with pendant backup

- Variable frequency drives

- Power rotating hook

VC Summer Fuel Handling Building & Crane Only the trolley is being replaced 20

Industry Operating Experience (OE)

• All Used Fuel Storage OE are catalogued on the VC Summer SharePoint site and are readily available

- Holtec Information Bulletins are also maintained there

• Some opportunities to learn

- Concrete and rebar fabrication issues (INPO Event Report 11-4)

- Difficulty in meeting ISFSI pad concrete strength range criteria (DC Cook OE32536)

- Various equipment and fabrication issues

- Various crane and rigging issues

Key Implementation Milestones Complete Undergrounds Modifications - Jul. 2013 Delivery of Holtec Equipment - June Complete FHB 2014 Upgrades - Jun.

2013 Complete NRC Complete Fuel Complete Haul Dry Runs -

Characterization Path Construction Dec. 2014

- Feb. 2012 - Jul. 2013 Jan 2012 RF20 Jan 2013 Jan 2014 RF21 Jan 2015 Replace FHB Crane Trolley - May 2012 Complete Security Modifications - Start Loading of Complete Hazards Apr. 2014 First 4 Canisters Mitigation - Dec.

- Jan. 2015 2012 Complete ISFSI Complete Loading Construction - Oct.

Training - Nov. 2014 2013 22

Questions?

Ques o s 23